Speed wrench



May 3, 1927. 1,626,719

- v C. CALLISON I SPEED WRENCH Filed March 10. 1925 2 Sheets-Sheet lamnion C. CALLISON May 3 1927..

SPEED WRENCH Filed March 10. 1925 2 Sheets-Sheet 2 aff M Patented May 3,192?. 4

CLA'UD CALLISON, OI LOYAL, OKLAHOMA.

SPEED WRENCH.

Application filed March 10, 1925. Serial No. 14,565.

The present invention appertains to a speed wrench and has for itsprincipal object to provide a Wrench or the like with means whereby theratio between the operating member and the operated member,

may be varied as to speed, and wherein the use of the members may bereversed so that the operating member becomes the operated member andvice versa.

Another important object of the invention is to provide in a wrenchstructure, means for ho ding the head of the bolt while a nut is beinloosened therefrom, said means being ad ustable for different lengths ofbolts.

A still further important object of the invention is to provide a simpleand eflicient structure in wrenches which will be thoroughly reliable inoperation, one which may be manufactured at a comparatively low cost.

Another important object of the, invention is to provide a wrenchstructure which is stron durable, not liable to readilykget out of orer, and otherwise well adapted'to the purpose for which it is designed.

With the above and numerous other objccts in view as will appear as thedescription proceeds, the invention resides in certain novel features ofconstruction and in the combination and arrangement of parts as will behereinafter more fully described and claimed.

In the drawing-- Fig. 1 is a sideelevation of the wrench, showingportions in section, I

Fig. 2 is an enlarged detail section showing the rotating block and itsshank,

Fig. 3 is a bottom plan view'of the block and easing therefor with thecover removed,

Fig. 4 is an end elevation thereof,

Fig. 5 is an elevation of the wrench showing an attachment thereon, and

ig. 6 is an elevation of the wrench showing a reversal use thereof.-

Referring to the drawing in detail, it will be vseen that 1 designates acylindrical casing having one end thereof closed by a plate or the like2. A tubular handle 3 extends centrally from this pla'e closure 2 andhas a knurled sleeve 4 fixed thereon in order that the casing may beheld stationary as will be brought out more clearly hereinafter.

A block 5 is rotatably mounted. in the easing 1 and is provided with anelongated shank 6 extending from one end thereof through the tubularextension 3 and is provided with a squared extremity 7 in order that acrank handle 8 may be engaged thereon. This crank handle 8 is providedwith a plurality of square openings 9 for this purpose. 2 I

A recess 10 is provided in the end of the block 5 opposite to that fromwhich extends the expanslon 6 and the inner end thereof is provided withan internal gear sectioii 11. A circular bore extends from the recess 10into the shank 6 terminatin in said shank 6 a suitable distance from t eblock 5 as is indicated at 12. A shaft 13 is slidable in this bore 12and also rotatable therein and has mounted thereon for rotationtherewith a pinion 14 which is in mesh with pinions 15 carried by pins16 and extending into the block 5. These pinions 15 are in mesh with aninterior annular rack provided on the casing 1 as at 17. p

A closure cap 18 is threaded on the easing and is provided with atubular extension 19 through which extends the shaft 13. A closure 20 isthreaded on the end of the tubular extension 19 and the shaft projectsthrough this closure and is adapted'to receive a couplin 21. Anextension rod 22 is engaged in t 1e coupling and carries the socket 23.This socket 23, ofcourse, may be applied directly to the end of theshaft 13. A shoulder 24 is fixed on the shaft 13 within the tubularextension 19 and is slid: able with the shaft. A shoulder 25 is fixed atthe upper end of the tubular extension 19.

adjacent pinion 14 and shaft 13 is slidable therein. 3

A spring 26 is disposed about the shaft within the tubular member 19 andimpinges against the shoulders 25 and 24. The shoulder 24 normally restson-the cap 20 so that when the shaft 13is slid to connect pinion 14 withgear section 11 for direct rotation with block 5, the spring 26 will becompressed and placed under tension to bring the parts back to thenormal position shown in Fig. 1.

When the shaft 13 is slid as just described, it will be seen that thepinion 14 may be meshed with the gear section 11, thereby fixing theshaft 13 with the block 5 for rotation directly therewith. When thepinion 14 however, is in its normal position as shown in Fig. 1, uponoperation of the shank'6 by the crank 8, the block 5 will be rotated inthe casing, thereby revolving the pinions 15 in an orbit and since theyare meshed with'the annular rack 17, these gears will rotate whilerevolving in the orbit, thereby rotating the pinion 14 at a great rateof speed. The rotation of this pinion, of course, rotates the shaft 13and the attachments connected thereto.

A frame F is mounted on the handle sleeve 4 by means of clamps havingrods 31 extending. therefrom and supporting'a ring 32. The hand,therefore may be inserted through this ring and grasped about the handlesleeve 4 and the ring will then be disposed about the wrist so that thecasing 1 may be held against rotation. I

In Fig. 5 I have shown an attachment which consistsof a sleeve 34disposed on the extension rod 22. A sleeve 35 is slidably mounted'onthe'sleeve 34 and carries an L- shaped rod 36 which adjustably supportsa bracket 37' havinga socket 38 alined with socket 23. The bracket 37 isin the form of a rod having a sleeve 39 at one end slidable L over theL-shaped rod 36 and held in difi'er- I out positions thereon by means ofa pin 40 passing through one of the plurality of openings 41 Thus thebolt head will be engaged in the socket 38 first and the sleeve 39 willbe adjusted on the L rod 36 until the nut is engaged in the socket 23.

A final adjustment may then be made by pushing the sleeve 34 intoengagement with the socket 23 and sliding the sleeve 35 away from thesocket 23, at which time the pivoted pawl 42 carried by the sleeve 35and extending through an opening 43 therein, will engage rack teeth 44onthe sleeve 34.

If desired, the rods 31 maybe provided with apertures as is indicated at45 in order that the extension rod 22 may be inserted therethrough toform an anchoringkey to engage a member inserted through the ring 32 orwith which the hand of the arm inserted through the ring may be .engagedtoprevent rotation of the casing when the wrench is used reversed. Byreferring to Fig. 6 it will be seen that the crank 8 may be engaged withthe shaft 13 and the socket with the shank 6, thereby. reversing theratio of gearing between the socket and the scription, and that numerouschanges in the details of construction, in the proportions, in thematerials, and in the combination and arrangement of parts as will behereinafter claimed.

Having thus described my invention, what claim as new is In a reversiblewrench, a casing, a sleeve extending upwardly from one end of thecasing, a block rotatably mounted in the casing and provided with arecess having an internal gear section formed therein, an elongatedshank extending upwardly from the. block through the sleeve, an annularrack carried by the casing, radially disposed 'pinions *rotatablycarried by the block and meshing with the annular rack, a tubularextension on the opposite end of the casing, a shaft slidably extendingthrough the tubular extension and into'the recess'of the block, a pinionfixed to the shaft and meshable with the radiallydisposed pinions, aspring seated in the tubular extension and adapted to normally retainthe pinion in mesh with said radially disposed pinions, a crank, and asocket member, said crank and said socket member being interchangeableon the free ends of the shank and shaft respectively.

In testimony whereof I aifix my signature.

CLAUD CALLISON.

